Question 15 — IGCSE 0580 March 2025 Paper 12
Cambridge IGCSE Mathematics 0580, Core tier, non-calculator. Topic: Geometry · Geometrical terms and vocabulary. Worth 5 marks.
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Question text
15
D
NOT TO
SCALE
y°
A B C
The diagram shows a triangle BCD and a straight line ABC.
DB=DC=BC.
(a) Write down the mathematical name for triangle BCD.
................................................. [1]
(b) Work out the value of y.
Give two geometrical reasons for your answer .
y = ....................... because
1. ........................................................................................................................................................
2. ........................................................................................................................................................
[4]
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